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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1021/la501983u
|2 doi
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|a eng
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| 100 |
1 |
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|a Shi, Yue
|e verfasserin
|4 aut
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| 245 |
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|a Phase winding of a nematic liquid crystal by dynamic localized reorientation of an azo-based self-assembled monolayer
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 21.05.2015
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|a Date Revised 12.08.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Azobenzene-based molecules forming a self-assembled monolayer (SAM) tethered to a glass surface are highly photosensitive and readily reorient liquid crystals in contact with them when illuminated with polarized actinic light. We probe the coupling of such monolayers to nematic liquid crystal in a hybrid cell by studying the dynamics of liquid crystal reorientation in response to local orientational changes of the monolayer induced by a focused actinic laser with a rotating polarization. The steady increase in the azimuth of the mean molecular orientation of the SAM around the laser beam locally reorients the nematic, winding up an extended set of nested rings of splay-bend nematic director reorientation until the cumulative elastic torque exceeds that of the surface coupling within the beam, after which the nematic director starts to slip. Quantitative analyses of the ring dynamics allow measurements of the anchoring strength of the azo-SAM and its interaction with the nematic liquid crystal
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|a Journal Article
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|a Fang, Guanjiu
|e verfasserin
|4 aut
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1 |
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|a Glaser, Matthew A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Maclennan, Joseph E
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Korblova, Eva
|e verfasserin
|4 aut
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| 700 |
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|a Walba, David M
|e verfasserin
|4 aut
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| 700 |
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|a Clark, Noel A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 30(2014), 31 vom: 12. Aug., Seite 9560-6
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:30
|g year:2014
|g number:31
|g day:12
|g month:08
|g pages:9560-6
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|u http://dx.doi.org/10.1021/la501983u
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